PythonからGoogle Driveにアクセス

% pip install google-api-python-client google-auth-httplib2 google-auth-oauthlib

{
  "installed": {
      "client_id": "536255836256-da86oasdladsfkjasd7893lasdfjk3af.apps.googleusercontent.com",
      "client_secret": "UAKLDasd8faAKVCJKdkDIDVL",
      "redirect_uris": [],
      "auth_uri": "https://accounts.google.com/o/oauth2/auth",
      "token_uri": "https://accounts.google.com/o/oauth2/token"
  }
}

import pprint
import google.oauth2.credentials

from googleapiclient.discovery import build
from google_auth_oauthlib.flow import InstalledAppFlow

CLIENT_SECRETS_FILE = 'client_secret.json' # 各自のclient_secret.jsonファイルへのパスを設定
SCOPES = ['https://www.googleapis.com/auth/drive']
API_SERVICE_NAME = 'drive'
API_VERSION = 'v3'

def get_authenticated_service():
    flow = InstalledAppFlow.from_client_secrets_file(CLIENT_SECRETS_FILE, SCOPES)
    credentials = flow.run_console()
    return build(API_SERVICE_NAME, API_VERSION, credentials = credentials)

def list_drive_files(service, **kwargs):
  results = service.files().list(**kwargs).execute()
  pprint.pprint(results)

if __name__ == '__main__':
  # When running locally, disable OAuthlib's HTTPs verification. When
  # running in production *do not* leave this option enabled.
  os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
  service = get_authenticated_service()
  list_drive_files(service)

% python python/google_drive.py
Please visit this URL to authorize this application: https://accounts.google.com/o/oauth2/auth?response_type=code&client_id=536255836256-da86oasdladsfkjasd7893lasdfjk3af.apps.googleusercontent.com&redirect_uri=urn%3Aises%3Bwg%3Aiauth%3A2.0%3Aoib&scope=https%3F%2A%2Fwww.googleapis.com%2Fauth%2Fdrive&state=wo7asdlkfadsklkkeAKcWYjRlvz&prompt=consent&access_type=offline
Enter the authorization code:

import os
import pickle
from pprint import pprint

import google.oauth2.credentials

from googleapiclient.discovery import build
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request

CLIENT_SECRETS_FILE = 'client_secret.json' # 各自のclient_secret.jsonファイルへのパスを設定
USER_CREDENTIALS_FILE = os.environ['USERNAME'] + '.credentials' #ユーザ毎の認証データ保存
SCOPES = ['https://www.googleapis.com/auth/drive']
API_SERVICE_NAME = 'drive'
API_VERSION = 'v3'

def get_authenticated_service():
    credentials = None
    if os.path.exists(USER_CREDENTIALS_FILE):  #保存したファイルがある場合はロード
        try:
            with open(USER_CREDENTIALS_FILE, 'rb') as fi:
                credentials = pickle.load(fi)

            if credentials.expired and credentials.refresh_token:
                credentials.refresh(Request())  # 期限の更新を試みる
        except EOFError as e:
            pass

    if credentials is None or not credentials.valid:
        flow = InstalledAppFlow.from_client_secrets_file(CLIENT_SECRETS_FILE, SCOPES)
        credentials = flow.run_console()

    with open(USER_CREDENTIALS_FILE, 'wb') as fo:  # 認証情報をファイルに保存
        pickle.dump(credentials, fo)

    return build(API_SERVICE_NAME, API_VERSION, credentials = credentials)

def list_drive_files(service, **kwargs):
    results = service.files().list(**kwargs).execute()
    return results

# すべてのファイルの一覧を取得 (1ページ分)
result = list_drive_files(service, pageSize=50)

# すべてのファイルの一覧を取得 (全ページ)
nextPageToken = None
while True:
    result = list_drive_files(service, pageSize=100, pageToken=nextPageToken)
    print(result)
    if 'nextPageToken' not in result:
        break
    nextPageToken = result['nextPageToken']

 # マイドライブ(トップフォルダ)にあるファイル一覧の取得
result = list_drive_files(service, q="'root' in parents")

def get_drive_folder_id(service, folder_path):
    """指定パスフォルダのfileIdを取得"""
    parent_id = 'root'
    for name in folder_path:
        res = list_drive_files(service,
                               q=f"'{parent_id}' in parents and "
                               "mimeType = 'application/vnd.google-apps.folder' and "
                               f"name = '{name}'")
        if 'files' not in res or len(res['files']) < 1:
            return None
        parent_id = res['files'][0]['id']

    return parent_id    

# 指定のフォルダにあるファイル一覧を取得
folder_id = get_drive_folder_id(service, ['tmp'])
result = list_drive_files(service, fields='*', q=f"'{folder_id}' in parents")

def get_drive_file(service, **kwargs):
    results = service.files().get(**kwargs).execute()
    return results

# 作成日時を取得
result = get_drive_file(service, fields='name,createdTime',
                        fileId='1voasdfjlsIJTvasABdfJPIasfda2V5h4jEhcn0oPkQ')

from googleapiclient.http import MediaIoBaseDownload

def get_drive_file_info(service, path):
    """指定パスのファイル情報を取得"""
    parent_id = 'root'
    path_depth = len(path)
    info = None
    for depth, name in enumerate(path):
        if depth < (path_depth - 1):
            mimeType = "mimeType = 'application/vnd.google-apps.folder' and "
        else:
            mimeType = ""
        res = list_drive_files(service,
                               q=f"'{parent_id}' in parents and "
                               f"{mimeType} "
                               f"name = '{name}'")
        if 'files' not in res or len(res['files']) < 1:
            return None
        info = res['files'][0]
        parent_id = res['files'][0]['id']

    return info

def download_file(service, file_info, output_dir):
    """指定ファイルのダウンロード"""
    req = service.files().get_media(fileId=file_info['id'])
    with open(os.path.join(output_dir, file_info['name']), 'wb') as f:
        downloader = MediaIoBaseDownload(f, req)
        done = False
        while not done:
            status, done = downloader.next_chunk()
            print(f"Download {status.progress() * 100}%")


# 指定パスのファイルをダウンロード
file_info = get_drive_file_info(service, ['tmp', 'hoge.txt'])
download_file(service, file_info, '.')

from googleapiclient.http import MediaFileUpload

def upload_file(service, local_file, remote_folder_id='root', mimetype='text/plain'):
    media = MediaFileUpload(local_file, mimetype=mimetype)
    file = service.files().create(body={'name': os.path.basename(local_file),
                                        'parents': [remote_folder_id]},
                                  media_body=media,
                                  fields='id').execute()
    print(f'File ID: {file.get("id")}')

# 指定フォルダにファイルをアップロード
upload_folder_id = get_drive_folder_id(service, ['tmp'])
upload_file(service, './hoge.txt', upload_folder_id)

def drive_mkdir(service, name, parent_id):
    res = service.files().create(body={'name': name,
                                       'parents': [parent_id],
                                       'mimeType': 'application/vnd.google-apps.folder'}
                                 ).execute()

# フォルダの作成
parent_folder_id = get_drive_folder_id(service, ['tmp'])
drive_mkdir(service, 'hoge', parent_folder_id)